An additional weakness in these arguments is that they are using perfectly functioning devices.
What happens when you have some dumbass with a wildly broken thing get on a plane? Testing needs to occur under the worst possible conditions, not the best possible.
We already knew it was safe in the best possible conditions.
600 million people fly each year. A HUGE number. They need to find out if it is safe for every device in all possible combinations and all possible conditions, because the real world will present those combinations very quickly.
Don't start with the best case, start with the 1 in a million case. Proceed from there.